Back to results
US 6,647,080 B1Granted
Carrier phase initialization with sub-LSB accuracy
AssigneeRockwell Collins, Inc.
InventorsJoseph M. Strus, Jeffrey L. Tuohino
Life of this patent
Estimating the term…
Abstract
A method of and computer readable medium for obtaining sub least significant bit phase accuracy in a digitally controlled oscillator by choosing a phase angle, θ; solving the base equation Ap+Bq=1 for A, wherein values of p and q are relatively prime components of a least significant bit; and computing a command value, k, from the command equation k=A*nint(qθ)mod(q).
Claims8
A method of obtaining sub least significant bit phase accuracy in simulating a carrier phase signal with a digitally controlled oscillator comprising the steps of:
- choosing a phase angle, θ;
- solving the base equation
- Ap+Bq=1
- for integers A and B, wherein values of p and q are relatively prime components of a least significant bit;
- and computing a command value, k, from the command equation
- k=A*nint(qθ)mod(q);
- and
- using said command value k to simulate a carrier phase signal.
5 more elements
A system for simulating a carrier phase signal comprising:
- a computer readable medium having computer executable instructions for causing a computer to perform the step of:
- solving the base equation
- Ap+Bq=1
- for integers A and B, wherein values of p and q are relatively prime components of a least significant bit;
- and
- computing a command value, k, for a value θ, from the command equation
- k=A*nint(qθ)mod(q);
- and
- a digitally controlled oscillator configured to generate a simulated carrier phase signal when said commanded by said command value k.
6 more elements
Dependencies are inferred from the claim text.